In a biological experiment, four concentrations of a
Chapter 13, Problem 13.23(choose chapter or problem)
In a biological experiment, four concentrations of a certain chemical are used to enhance the growth of a certain type of plant over time. Five plants are used at each concentration, and the growth in each plant is measured in centimeters. The following growth data are taken. A control (no chemical) is also applied. Concentration Control 1 2 3 4 6.8 8.2 7.7 6.9 5.9 7.3 8.7 8.4 5.8 6.1 6.3 9.4 8.6 7.2 6.9 6.9 9.2 8.1 6.8 5.7 7.1 8.6 8.0 7.4 6.1 Use Dunnetts two-sided test at the 0.05 level of significance to simultaneously compare the concentrations with the control.
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